baber/WOPTO huggingface dataset:
Patent CA-2055210-C (CA)
Title: Tamper resistant closure cap and a method of operation therefor
Inventor: NOFER KARL H
IPC: B65D41/34
Filed: 1991-11-08
Granted: 1994-01-11
Abstract: ABSTRACT A tamper resistant closure and a method of installing and removing that closure relative to a container where the container has a neck with external threads thereon and a ring located beneath the threads.  The closure has a central portion with a periphery and a skirt extending from the periphery, a tear strip extending from the skirt, a tamper evident band extending from the tear strip and a movable flange extending from the band.  The tear strip is affixed between the skirt and the band by a plurality of severable tabs.  The flange is hinged to the tamper evident band and is movable between an upper position and a lower position.  When the closure is installed on the container, the flange is forced against an interior of the band and overrides the ring.  Once the flange has overridden the ring, a free edge of the flange moves inward to rest against an outer surface of the neck beneath the ring.  The closure can then not be removed from the container without first severing the tabs as the flange will not override the ring during removal of the closure.  The tabs are severed by manually grasping a handle of the tear strip and removing the tear strip.  When the tear strip is removed, there is a relatively large gap between the skirt and the band, making it readily apparent that the contents of the container may have been tampered with.  Once the tear strip has been removed, the closure functions in a conventional manner for opening and closing the container.  With previous devices, the band is affixed to the skirt along a weakened line or through tabs without using a tear strip.  To remove the closure for the first time, the closure is manually turned until all of the tabs are severed virtually simultaneously. If the tabs are too strong, it can be extremely difficult to open the container.  If the tabs are too weak, some or all of the tabs become prematurely severed during the initial installation of the closure on the container or during shipping and handling.  With previous closures, it is very difficult to manufacture closures with tabs of the proper strength as the tolerances for error are extremely narrow. The tabs of the present invention can be relatively strong as they are severed singly or in pairs and not all at once.
Patent CA-2055216-C (CA)
Title: Process for the preparation of a high molecular weight olefin polymer
Inventor: WINTER ANDREAS
IPC: C08F10/00
Filed: 1991-11-08
Granted: 2004-02-10
Abstract: Process for the preparation of a high molecular weight olefin polymer A very active catalyst system for olefin polymerization is composed of an aluminoxane and a metallocene of the formula I   (see formula I) wherein preferably M1 is Zr or Hf, R1 and R2 are alkyl or halogen, R3 and R4 are hydrogen, R5 and R6 are alkyl or haloalkyl, -(CR8R9)m-R7-(CR8R9)n- is a single-membered or multimembered chain in which R7 may also be a (sub-stituted) hetero atom, and m+n is zero or 1. The catal-yst system gives polymers having a high molecular weight and high stereospecificity.
Patent CA-2056248-C (CA)
Title: Process for making molded polymeric product with multipass expansion of polymer bead with low blowing agent content
Inventor: HARCLERODE WILLIAM HARRISON
IPC: B29C47/00
Filed: 1991-11-26
Granted: 1997-03-18
Abstract: A method for making low density (0.8-1.1 lb/cu.ft.) expanded polymeric products uses blowing agent in an amount of only from 2 to 4.4 weight percent.  The process uses 2 to 5 expansion steps together with a polymer having a particular polydispersity, weight average molecular weight and Mz:Mn, this polymer having a greater expandability than conventional polymers.  The process requires only about half of the amount of blowing agent currently being used in commercially viable processes for making expanded polystyrene products.   The process can be used with or without a molding step.
Patent CA-2060160-C (CA)
Title: Method of positioning tubing within a horizontal well
Inventor: YOUNG CRAIG E
IPC: E21B23/00
Filed: 1992-01-28
Granted: 1994-11-08
Abstract: A method of selectively and variably positioning tubing within the generally horizontal section of a horizontally drilled well. A tubing string having a guide shoe secured to the end thereof is inserted into a portion of the horizontal section of a horizontal well. Smaller diameter tubing is then inserted through the tubing string and past guide shoe into the generally horizontal section. The smaller diameter tubing can be inserted to a point proximate the end of the horizontal section of the well or intermediate between the end and the guide shoe. The subterranean formation surrounding the generally horizontal section may be stimulated or treated by injecting a fluid via the smaller diameter tubing.
Patent CA-2062875-C (CA)
Title: Multiplier and squaring circuit to be used for the same
Inventor: KIMURA KATSUJI
IPC: G06F7/52
Filed: 1992-03-12
Granted: 1997-05-13
Abstract: Disclosed is a multiplier comprising a first and second squaring circuits each having  a differential input terminal pair  whose outputs are  connected in common.  A first input terminal of  the first  squaring circuit  is  applied with a first input voltage  and  a second input terminal thereof is applied with a second input voltage opposite in phase to the first input voltage.   A first input terminal  of the second squaring  circuit  is  applied with the second input voltage and a  second input terminal  thereof  is  applied with  the first input voltage.  The first and second squaring circuits each includes two sets of unbalanced differential transistor pairs  which are arranged  so that their inputs are opposite in  phase and  their outputs are connected  in common.  Said each unbalanced differential transistor pair has a different emitter  size  from  each  other.   Two  transistors  having different  emitter  sizes  constituting  each   differential transistor pair  may be  connected with  an emitter resistor having  a  resistant value  inversely  proportional  to  the emitter size ratio  to the both  or  one  of  them.  The two transistors  constituting  said each differential transistor pair may be equal in emitter size.   In this case,  only one transistor thereof has an emitter resistor connected.  Also, in case of  being equal  in  emitter  size,  one  transistor thereof may have a Darlington connection.
Patent CA-2063616-C (CA)
Inventor: SPENCER DUDLEY W C
IPC: B29C57/10
Filed: 1992-03-20
Granted: 2002-01-08
Abstract: A plastic tube is cut into two sections which are sealed closed by a sterile method wherein the tube is loaded into two clamping jaws which flatten the tube. The tube is cut through the flattened section and the cut ends are heated to their molten state. A wafer having wings is located between the cut ends with the wings penetrating the lumens to create an internal plug as the wings force the molten material inwardly. The plugs add to the strength of the resultant seal. If desired, the molten ends are pressed into a cavity which is cooled to a temperature below the molten temperature to seal the ends. The tubes are then removed from the cavity. When it is desired to connect individual tube sections the two tube sections are placed in clamp members in axial alignment slightly spaced from each other. The ends of the tube sections are melted by a melt/wipe process and the tube sections are then pressed into contact with each other to be welded into an integral tube. The same device is used for both the sterile disconnect and connect procedures.
Patent CA-2064584-C (CA)
Title: Cooking oil filter
Inventor: GARDNER JOHN G
IPC: A47J37/12
Filed: 1990-08-14
Granted: 1998-02-10
Abstract: An improved filter comprising a porous sheet of substantially uniform thickness having the following composition: 15 % to 35 % activated carbon; 15 % to 40 % calcium silicate, magnesium silicate, or mixtures thereof; 25 % to 40 % cellulosic fiber; up to 2 % resin binder; and, optionally, 0 % to 30 diatomaceous earth.
Patent CA-2065868-C (CA)
Title: Locomotive dynamic brake control
Inventor: EARLESON WALTER E
IPC: B60L3/10
Filed: 1991-08-09
Granted: 2000-02-01
Abstract: An apparatus ( 10) for controlling dynamic braking in a vehicle having at least one drive motor (26) of the type having an armature and a field (27). The motor (26) is adapted to function as an alternator during dynamic braking for dissipating power through a resistor grid (38). The vehicle includes a field current controller (24) for regulating the level of dynamic braking by controlling the current level through the motor field (27). A brake level selector (76) is provided for producing a desired braking level signal. A field current sensor (64) senses the current level in the motor field (27) and produces an actual field current signal. A grid current sensor (68) senses the level of current flowing through the resistor grid and produces an actual grid current signal. A controller (10) receives the desired brake level signal, the actual field current signal, and the actual grid current signal. The controller (10) produces a first desired field current signal and a desired grid current signal in response to the desired brake level signal. The controller (10) further produces a second desired field current signal in response to the actual field current, actual grid current, and desired grid current signals, compares the first and second desired current field signals and produces a final desired field current signal responsive to the compared signals. The field current through the motor (26) is controlled in response to the final desired field current signal.
Patent CA-2067495-C (CA)
Inventor: JOHANSSON HANS ERIK
IPC: C01B33/146
Filed: 1990-10-24
Granted: 1996-11-05
Abstract: Silica sols which have a large alkali excess, i.e. a low molar ratio SiO2 to M2O, and which contain silica particles with a high specific surface area. The silica sols can be prepared through acidification of a water glass solution and subsequent al-kalization of the acid sol to the molar ratio in question. The sols are particularly suitable for use as additives, in combination with cationic polymers, in papermaking.
Patent CA-2070148-C (CA)
Inventor: COVER WILLIAM H
IPC: C12P7/42
Filed: 1992-06-01
Granted: 1999-11-09
Abstract: Novel strains of Aspergillus terreus have been discovered which provide fermentation production of at least 5.2 g/L of 7-[1,2,6,7,8,8a(R)-hexahydro-2(S), 6(R)-dimethyl-8(S)-hydroxy-1(S)-naphthyl]-3(R), 5(R)-dihydroxyheptanoic acid (triol acid; I), but with production of not more than 0.85 g/L of (triol acid)-related side products and specifically less than 0.10 mg/liter of lovastatin. The predominant fermentation product triol acid, may be converted in a straightforward manner to its lactone form, in which it is an inhibitor of HMG-CoA reductase and thus useful as an antihyper-cholesterolemic agent, and in which it may also serve as an intermediate for preparation of other HMG-CoA reductase inhibitors.
Patent CA-2079968-C (CA)
Inventor: STERLING JEFF
IPC: A61P25/28
Filed: 1992-10-06
Granted: 2004-12-21
Abstract: N-propargyl-1-amonoindan monofluorinated in the phenyl ring and their use as selective inhibitors of monoamine oxidase (MAO).      There are provided several processes for the preparation of these novel compounds. There are also provided as novel compounds 1-aminoindans monofluorinated in the phenyl ring, which serve as intermediates in the preparation of the corresponding novel N-propargyl derivatives.
Patent CA-2084864-C (CA)
Inventor: CHEMINAL BERNARD
IPC: B01J37/03
Filed: 1992-12-08
Granted: 1998-06-23
Abstract: L'invention concerne des catalyseurs massiques à base d'oxydes de chrome et de nickel, caractérisés en ce que le rapport atomique Ni/Cr est compris entre 0,05 et 5 et qu'il sont obtenus par un procédé consistant essentiellement: a) à former un sol d'hydroxydes de chrome III et de nickel II, b) à gélifier ce sol, et c) à sécher et calciner le produit à une température comprise entre 250 et 450.degree.C. L'invention concerne également un procédé de fluoration par HF en phase gazeuse d'hydrocarbures halogénés, saturés ou oléfiniques, caractérisé en ce qu'on utilise un catalyseur tel que défini précédemment.
Patent CA-2084929-C (CA)
Title: Catalyst and process for cracking hydrocarbons with highly attrition resistant mesoporous catalytic cracking catalysts
Inventor: WACHTER WILLIAM AUGUSTINE
IPC: B01J35/10
Filed: 1992-12-09
Granted: 2000-01-25
Abstract: A catalytic cracking catalyst and process for converting a hydrocarbon feedstock at elevated temperature in the substantial absence of hydrogen, into lower average molecular weight, lower boiling hydrocarbons useful as transportation fuels. The catalyst is a composite of a crystalline aluminosilicate zeolite in concentration ranging as hi gh as about 80 percent, based on the total weight of the catalyst, within a mesoporous silica-alumina matrix. The matrix, preferably, is constituted of silica sols modified by alumina and clay and it is characterized as of polymodal pore size distribution, as measured by mercury porosimetry, a first mode wherein at least 75 percent, preferably about 80 percent to 90 percent, of the pore volume measured between 45 Angstroms and 2000 Angstroms is in pores greater than 160Angstroms in diameter, and a second mode wherein up to about 20 percent of the pore diameters are greater than 100 Angstroms but less than 160 Angstroms in diameter. These catalysts are highly active, and selective in the production of olefins without high coke made. The attrition-resistance of these catalysts, as measured by the Davison Index, is quite low, ranging generally from about 1 to about 8, more generally from about 1 to about 5, or less.
Patent CA-2089592-C (CA)
Inventor: DRACH ROBERT G
IPC: H01R13/62
Filed: 1993-02-16
Granted: 1997-05-27
Abstract: A tool (150) of this invention assembles stackable elements (52, 54 and 56) to form a multiple conductor connector (50).  A holding bracket assembly (100) is incorporated in the tool (150) to prohibit undesirable movement of the lowermost connector element (52) and to maintain alignment of the various elements of the connector (50) during the connectorization process. In accordance with the present invention, at least one protrusion (112) is manipulated into physical engagement with a side portion of the lowermost connector element (52). The protrusion (112) is spring-loaded and includes a sharp, tapered edge constructed of hardened material which provides a position-securing force to the connector (50) by becoming embedded into the side portion of the lowermost connector element (52). In addition, a second protrusion (110) is aligned opposite each of the sharp protrusions (112) and capable of providing an additional position-securing force to a second side portion of the lowermost connector element (52).
Patent CA-2090992-C (CA)
Title: Winged plow
Inventor: QUENZI PHILIP J
IPC: E01H5/06
Filed: 1993-03-04
Granted: 1996-05-28
Abstract: A winged plow for moving snow or other materials with a vehicle has a support frame pivotally connected with one end of a plow vehicle.  An elongated plow blade having two opposing ends is pivotally connected with the terminal end of the support frame for generally horizontal rotation between a centered position with the plow blade oriented generally perpendicular to the support frame and an angled position with the plow blade rotated substantially away from the centered position.  One of a pair of plow blade wings is pivotally connected at each of the opposing ends of the plow blade for rotation between a closed position in which the wings project generally forward, the wings and plow blade defining a generally U-shaped assembly, and an open position in which the wings project in generally opposite directions, away from each other, effectively extending the length of the plow blade.  An actuator, which may be cable, hydraulically or mechanically operated, is responsive to the position of the plow blade relative to the support frame manipulates the wings between the closed position when the plow blade is substantially in the centered position and the open position when the plow blade is rotated substantially away from the centered position, either left or right.
Patent CA-2091594-C (CA)
Title: Presence detecting and safety control apparatus
Inventor: OGINO HIROYUKI
IPC: B60R21/01
Filed: 1993-03-12
Granted: 1996-02-20
Abstract: A safety control apparatus for a vehicle positively discriminates between an object and a person by detection of physical movement by the heart activity or the breathing of the person, the movement being detected by a vibration sensor in a seat.  Starting of the vehicle can be prevented if a reserved seat is unoccupied.  When a person is present, the driving operation cannot be started before engagement of the seat belt.
Patent CA-2092664-C (CA)
Inventor: GANDINI MARCO
IPC: H04L12/54
Filed: 1993-03-12
Granted: 1999-10-12
Abstract: The switching element allows building up of ATM exchanges capable of processing cell flows at bit rates higher than 700 Mbit/s. It uses an architecture with output queues, implemented through a unique shared memory, suitably controlled in order to obtain spatial cell switching towards the outputs. ATM cells are converted into a highly parallel format by a structure named rotation memory, where through the cells are then transferred into the master memory. The rotation memory is used also for the inverse operations of format restoration towards the output. The element control circuit is entrusted with the generation of writing and reading addresses of the master memory, in order to carry out the switching proper.
Patent CA-2097501-C (CA)
Inventor: NIEBAUER KENNETH L
IPC: B23B27/22
Filed: 1992-01-09
Granted: 1995-08-15
Abstract: An indexable cutting insert (2) is shown capable of cutting operations over a wide range of parameters such as depth of cut or feed rate. The insert has different geometries at certain locations on the cutting surface (22) such that under differing parame-ters a desirable cutting surface will be in contact with the workpiece.
Patent CA-2102087-C (CA)
Title: Contact recording disk file with a magnetoresistive read sensor
Inventor: DOVEK MORIS MUSA
IPC: G11B5/31
Filed: 1993-10-29
Granted: 1998-11-24
Abstract: A contact magnetic  recording rigid disk file utilizes a magnetoresistive (MR)  sensor for reading data recorded on the disk.  The disk file may be of the liquid-bearing type of contact recording with the MR sensor supported on the trailing end of a carrier which rides on the liquid bearing. The performance of the disk file is enhanced by including means for minimizing the effect of a discovered baseline read signal modulation.  The modulation has been determined to be caused by variable cooling of the temperature-sensitive and temperature-elevated MR sensor by the disk, with the temperature variation being directly related to the variation in head-disk spacing caused by the waviness of the surface of the disk.  A filter may be incorporated into the read  signal  processing  circuitry  of  the  disk  file  to eliminate the modulation, the MR sensor may be designed to operate at selected parameters to minimize the effect of the baseline  modulation,  and  the  portion  of  the  carrier  in contact with the disk surface may be selected to have a length less than the period of the disk waviness so that it more closely follows the disk surface topography.
Patent CA-2102336-C (CA)
Inventor: MATOSSIAN HOVHANNES AGOP
IPC: B21K1/28
Filed: 1993-11-03
Granted: 1999-12-21
Abstract: A one-piece forged vehicle wheel manufactured from a single piece of metal material thereby forming a strong, lightweight wheel. The wheel is manufactured as a result of extrusion, forging and machining a metal blank to provide the desired contours and configuration. The integral nature of the rim and hub eliminates the need to weld components, improving integrity while reducing manufacturing costs.
Patent CA-2104464-C (CA)
Title: Micropin connector system
Inventor: MCCARDELL WILLARD B JR
IPC: H01R13/42
Filed: 1991-11-07
Granted: 1996-12-24
Abstract: An electrical connector system includes socket and plug connector components (10, 180) which each receive a plurality of electrical wires for interconnection.  The socket and plug components (10, 180) each include a molded receiver element (12, 182) having a plurality of elongated, parallel locking finger elements (14, 184) and a molded spacer element (16, 188) having a plurali-ty of elongated, parallel spacer fingers (18, 190). The receiver and spacer elements are assembled so that their respective fingers are interdigitated to define a plurality of terminal receiver channels within each of the socket and plug components. Each of the electrical wires carries a socket and plug (26) or a pin terminal (200) for connection to respective socket or plug component (26), the terminals each incorporating a locking surface (20, 192) which engages a corresponding locking surface formed in corre-sponding terminal receiver channels, so that the terminals can be releasably secured in the connector components.
Patent CA-2108916-C (CA)
Inventor: DEWEY CHARLES H
IPC: E21B17/10
Filed: 1993-10-21
Granted: 2004-12-14
Abstract: A downhole adjustable blade stabilizer is disclosed for varying the position of stabilizer blades to provide an increased ability to control the direction of drilling. The adjustable blade stabilizer includes a plurality of blades mounted in an angled track to permit axial and radial movement of the blades. The blades are driven by a piston in response to a pressure differential created by a sufficient flow of drilling mud through the stabilizer. The stabilizer blades are retracted by a spring when the pressure differential is eliminated. A positioning piston limits blade extension to a desired position. The positioning piston moves in response to a command signal, and remains in place until a new command signal is received. By maintaining the positioning piston in a locked position, the position of the blades can be reset to the prior position after the loss of pressure differential. A measuring means is provided in association with the positioning piston to enable precise measurement of blade position.